偏心支承对45度圆心角双跨弯箱梁桥的影响  

Influence of Eccentric Support on two-span Curved Box-girder Bridges with 45-degree central angle

作　　者：宋国华[1] 罗玲[2] 霍达[3] 王东炜[1] 刘延生[4] 

机构地区：[1]郑州大学土木工程学院,河南郑州450002 [2]北京市市政工程设计研究总院,北京100045 [3]北京工业大学建筑工程学院,北京100022 [4]郑州大学基建处,河南郑州450001

出　　处：《中南公路工程》2006年第2期66-69,共4页Central South Highway Engineering

基　　金：国家自然科学基金资助项目(50178064)

摘　　要：通过对72个圆心角为45度的双跨偏心支承弯箱梁桥模型的计算分析,以梁格系法为基础编制的3D—BSA软件系统为结构计算工具,用统计分析的方法建立双跨偏心支承弯箱梁桥结构反应在使用极限状态及承载能力极限状态下与桥梁跨长、支承偏心距等参数间的经验公式,为双跨偏心弯箱梁桥的实用设计提出适当建议或借鉴依据。In this paper 72 two-span curved box-girder bridge modes with 45-degree central angle and eccentric support were made, software system 3D-BSA was used to compute, and statistic analysis method to set up empirical formulas between structure responses and parameters, such as bridge span and eccentricity of support for this type of bridges under service capacity state and carrying capacity state, so as to make some suggests or basis for practical design.

关 键 词：弯箱梁桥 偏心支承 实用设计 经验公式 

分 类 号：U448.213[建筑科学—桥梁与隧道工程]